ArticleFood & nutrition research2026
Energy drink consumption, sleep behavior, and food choices of Icelandic adolescents.
Article in Food & nutrition research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The consumption of energy drinks has increased in the last decades, especially among adolescents. Caffeine and its effects on sleep are well known, but less is known about the timing of the consumption and its association with sleep and food choices. Objective: The objective of this study was to evaluate the energy drink consumption, sleeping behavior, and food choices in Icelandic adolescents. Design: A total of 171 participants (64 boys, 107 girls, aged 17-18 years) completed an online questionnaire on sleep, food choices, and energy drink consumption. Independent sample Results: Overall, 57% reported drinking energy drinks, with higher rates among girls than boys (63 vs. 48%). Energy drink consumers were more likely to report sleeping 6 h or less. This was especially true for those drinking energy drinks after 3 PM, compared to those who avoided them after 3 PM. Participants who consumed energy drinks also ate fewer nutritious foods (fruits, vegetables, dairy, fish) and consumed more soft drinks, coffee, and alcohol compared to non-energy drink consumers. Discussion: The results show that energy drink consumption is frequent among Icelandic 17-year-olds, particularly among girls. Consumers were more likely to report shorter sleep durations, especially when drinking after 3 PM, and had poorer dietary habits, including lower intake of nutritious foods and higher consumption of soft drinks, coffee, and alcohol. Conclusion: Future research should explore the long-term effects of these behaviors and assess interventions to reduce energy drink use and promote healthier habits in adolescents.
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